Measurement methods

Power measurementThe effective power of the panels under standard test conditions as well as at different irradiances is determined using I/V curve measurements. Irregularities in the I/V curve can be identified.Full spectrum long pulse LED flasherSpectrum: Class A+ according to IEC60904 Ed2Long term instability (LTI): < +/-0.25 % (Class A+++ IEC60904 Ed2)Non uniformity: < +/-2 % (Class A IEC60904 Ed2)Total irradiance: 200 – 1200 W/m²Accuracy of Pmax: better +/-3 % possibleTyco Solarlok connectors, adapters for MC3 and MC4

ElectroluminescenceHigh resolution electroluminescence images visualize inactive areas and microcracks in the cell for the human eye.2 MBJ NIR-CCD cameras, adaptive and active cooled CCDApprox. 300 μm/pixel (equivalent to approx. 20 MPixel for the full PV-panel)< 20 s for a full panel image